1) Carbon steel fitting and stainless steel fitting 2) Standard: ASME, ANSI, JIS, DIN 3) Material: stainless steel, carbon steel (WPB A234), alloy steel 4) Size: pipe fittings (1/2"-48"), flanges (1/2"-5,000mm) 5) Surface treatment: transparent oil, rust-proof oil, hot galvanizing 6) Price: very competitive 7) Special design available